/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/array-patterns/array29_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 10:21:49,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 10:21:49,703 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 10:21:49,763 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 10:21:49,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 10:21:49,766 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 10:21:49,768 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 10:21:49,770 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 10:21:49,771 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 10:21:49,774 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 10:21:49,776 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 10:21:49,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 10:21:49,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 10:21:49,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 10:21:49,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 10:21:49,781 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 10:21:49,782 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 10:21:49,782 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 10:21:49,784 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 10:21:49,788 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 10:21:49,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 10:21:49,789 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 10:21:49,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 10:21:49,791 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 10:21:49,796 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 10:21:49,802 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 10:21:49,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 10:21:49,803 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 10:21:49,803 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-01-31 10:21:49,811 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 10:21:49,811 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 10:21:49,812 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 10:21:49,813 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 10:21:49,813 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 10:21:49,813 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 10:21:49,813 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 10:21:49,813 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 10:21:49,813 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 10:21:49,813 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 10:21:49,814 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 10:21:49,814 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 10:21:49,814 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 10:21:49,814 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 10:21:49,814 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 10:21:49,814 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 10:21:49,814 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 10:21:49,814 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 10:21:49,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 10:21:49,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 10:21:49,814 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 10:21:49,815 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-31 10:21:49,815 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 10:21:49,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 10:21:50,022 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 10:21:50,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 10:21:50,024 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 10:21:50,026 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 10:21:50,027 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-patterns/array29_pattern.c [2022-01-31 10:21:50,092 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b0e32e80/930c70c7a6e44ebe8e5217cce1df1e0e/FLAG0da70efeb [2022-01-31 10:21:50,403 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 10:21:50,403 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array29_pattern.c [2022-01-31 10:21:50,407 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b0e32e80/930c70c7a6e44ebe8e5217cce1df1e0e/FLAG0da70efeb [2022-01-31 10:21:50,839 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b0e32e80/930c70c7a6e44ebe8e5217cce1df1e0e [2022-01-31 10:21:50,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 10:21:50,843 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-31 10:21:50,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 10:21:50,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 10:21:50,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 10:21:50,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:21:50" (1/1) ... [2022-01-31 10:21:50,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b85755d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:21:50, skipping insertion in model container [2022-01-31 10:21:50,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:21:50" (1/1) ... [2022-01-31 10:21:50,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 10:21:50,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 10:21:50,979 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array29_pattern.c[1255,1268] [2022-01-31 10:21:50,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 10:21:51,000 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 10:21:51,008 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-patterns/array29_pattern.c[1255,1268] [2022-01-31 10:21:51,012 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 10:21:51,019 INFO L208 MainTranslator]: Completed translation [2022-01-31 10:21:51,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:21:51 WrapperNode [2022-01-31 10:21:51,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 10:21:51,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 10:21:51,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 10:21:51,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 10:21:51,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:21:51" (1/1) ... [2022-01-31 10:21:51,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:21:51" (1/1) ... [2022-01-31 10:21:51,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:21:51" (1/1) ... [2022-01-31 10:21:51,031 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:21:51" (1/1) ... [2022-01-31 10:21:51,038 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:21:51" (1/1) ... [2022-01-31 10:21:51,041 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:21:51" (1/1) ... [2022-01-31 10:21:51,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:21:51" (1/1) ... [2022-01-31 10:21:51,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 10:21:51,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 10:21:51,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 10:21:51,044 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 10:21:51,047 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:21:51" (1/1) ... [2022-01-31 10:21:51,054 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 10:21:51,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:21:51,070 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-31 10:21:51,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-31 10:21:51,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 10:21:51,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 10:21:51,105 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 10:21:51,106 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 10:21:51,106 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 10:21:51,106 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 10:21:51,106 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 10:21:51,106 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 10:21:51,106 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 10:21:51,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 10:21:51,107 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 10:21:51,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 10:21:51,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 10:21:51,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2022-01-31 10:21:51,107 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 10:21:51,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 10:21:51,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 10:21:51,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 10:21:51,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 10:21:51,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 10:21:51,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 10:21:51,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 10:21:51,150 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 10:21:51,151 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 10:21:51,248 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 10:21:51,252 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 10:21:51,252 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-01-31 10:21:51,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:21:51 BoogieIcfgContainer [2022-01-31 10:21:51,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 10:21:51,254 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-31 10:21:51,254 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-31 10:21:51,254 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-31 10:21:51,256 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:21:51" (1/1) ... [2022-01-31 10:21:51,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 10:21:51 BasicIcfg [2022-01-31 10:21:51,267 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-31 10:21:51,268 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 10:21:51,268 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 10:21:51,277 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 10:21:51,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 10:21:50" (1/4) ... [2022-01-31 10:21:51,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aed5413 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:21:51, skipping insertion in model container [2022-01-31 10:21:51,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:21:51" (2/4) ... [2022-01-31 10:21:51,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aed5413 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:21:51, skipping insertion in model container [2022-01-31 10:21:51,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:21:51" (3/4) ... [2022-01-31 10:21:51,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aed5413 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 10:21:51, skipping insertion in model container [2022-01-31 10:21:51,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 10:21:51" (4/4) ... [2022-01-31 10:21:51,279 INFO L111 eAbstractionObserver]: Analyzing ICFG array29_pattern.cJordan [2022-01-31 10:21:51,282 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-01-31 10:21:51,282 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 10:21:51,307 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 10:21:51,311 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-31 10:21:51,311 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 10:21:51,321 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 24 states have (on average 1.5) internal successors, (36), 25 states have internal predecessors, (36), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 10:21:51,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-31 10:21:51,327 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:21:51,328 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:21:51,328 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:21:51,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:21:51,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1860146265, now seen corresponding path program 1 times [2022-01-31 10:21:51,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:21:51,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923218060] [2022-01-31 10:21:51,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:21:51,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:21:51,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:21:51,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 10:21:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:21:51,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-01-31 10:21:51,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:21:51,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 10:21:51,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:21:51,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923218060] [2022-01-31 10:21:51,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923218060] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 10:21:51,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 10:21:51,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 10:21:51,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140750082] [2022-01-31 10:21:51,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 10:21:51,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 10:21:51,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:21:51,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 10:21:51,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 10:21:51,573 INFO L87 Difference]: Start difference. First operand has 34 states, 24 states have (on average 1.5) internal successors, (36), 25 states have internal predecessors, (36), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:21:51,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:21:51,636 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2022-01-31 10:21:51,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 10:21:51,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-01-31 10:21:51,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:21:51,642 INFO L225 Difference]: With dead ends: 34 [2022-01-31 10:21:51,642 INFO L226 Difference]: Without dead ends: 27 [2022-01-31 10:21:51,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 10:21:51,645 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:21:51,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 42 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:21:51,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-31 10:21:51,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-01-31 10:21:51,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 10:21:51,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2022-01-31 10:21:51,670 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 19 [2022-01-31 10:21:51,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:21:51,671 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2022-01-31 10:21:51,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:21:51,671 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-01-31 10:21:51,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-31 10:21:51,672 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:21:51,672 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:21:51,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 10:21:51,673 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:21:51,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:21:51,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1526296874, now seen corresponding path program 1 times [2022-01-31 10:21:51,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:21:51,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362090168] [2022-01-31 10:21:51,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:21:51,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:21:51,698 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:21:51,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1478454348] [2022-01-31 10:21:51,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:21:51,699 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:21:51,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:21:51,715 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 10:21:51,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-31 10:21:51,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:21:51,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-31 10:21:51,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:21:51,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 10:21:51,833 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 10:21:51,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:21:51,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362090168] [2022-01-31 10:21:51,834 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:21:51,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478454348] [2022-01-31 10:21:51,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478454348] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 10:21:51,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 10:21:51,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 10:21:51,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771356209] [2022-01-31 10:21:51,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 10:21:51,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 10:21:51,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:21:51,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 10:21:51,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-31 10:21:51,836 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:21:51,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:21:51,888 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2022-01-31 10:21:51,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 10:21:51,889 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-01-31 10:21:51,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:21:51,890 INFO L225 Difference]: With dead ends: 36 [2022-01-31 10:21:51,890 INFO L226 Difference]: Without dead ends: 36 [2022-01-31 10:21:51,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-31 10:21:51,892 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 42 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 10:21:51,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 54 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 10:21:51,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-01-31 10:21:51,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 29. [2022-01-31 10:21:51,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 10:21:51,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2022-01-31 10:21:51,897 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 19 [2022-01-31 10:21:51,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:21:51,898 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2022-01-31 10:21:51,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:21:51,898 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2022-01-31 10:21:51,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-31 10:21:51,899 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:21:51,899 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:21:51,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-31 10:21:52,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:21:52,118 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:21:52,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:21:52,118 INFO L85 PathProgramCache]: Analyzing trace with hash -357154871, now seen corresponding path program 1 times [2022-01-31 10:21:52,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:21:52,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122368492] [2022-01-31 10:21:52,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:21:52,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:21:52,130 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:21:52,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [385664529] [2022-01-31 10:21:52,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:21:52,130 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:21:52,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:21:52,139 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 10:21:52,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-31 10:21:52,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:21:52,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-31 10:21:52,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:21:52,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 10:21:52,262 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 10:21:52,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:21:52,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122368492] [2022-01-31 10:21:52,262 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:21:52,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385664529] [2022-01-31 10:21:52,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385664529] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 10:21:52,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 10:21:52,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 10:21:52,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289373063] [2022-01-31 10:21:52,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 10:21:52,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 10:21:52,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:21:52,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 10:21:52,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-31 10:21:52,264 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:21:52,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:21:52,298 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2022-01-31 10:21:52,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 10:21:52,299 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2022-01-31 10:21:52,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:21:52,299 INFO L225 Difference]: With dead ends: 34 [2022-01-31 10:21:52,299 INFO L226 Difference]: Without dead ends: 34 [2022-01-31 10:21:52,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-31 10:21:52,300 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 20 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 10:21:52,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 48 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 10:21:52,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-01-31 10:21:52,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2022-01-31 10:21:52,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 10:21:52,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2022-01-31 10:21:52,304 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 25 [2022-01-31 10:21:52,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:21:52,304 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2022-01-31 10:21:52,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:21:52,304 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2022-01-31 10:21:52,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-31 10:21:52,305 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:21:52,305 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:21:52,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-31 10:21:52,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-01-31 10:21:52,521 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:21:52,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:21:52,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1678477151, now seen corresponding path program 1 times [2022-01-31 10:21:52,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:21:52,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424181809] [2022-01-31 10:21:52,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:21:52,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:21:52,537 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:21:52,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1636474375] [2022-01-31 10:21:52,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:21:52,538 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:21:52,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:21:52,539 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 10:21:52,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-31 10:21:52,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:21:52,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-31 10:21:52,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:21:52,692 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-31 10:21:52,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:21:52,817 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-31 10:21:52,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:21:52,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424181809] [2022-01-31 10:21:52,817 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:21:52,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636474375] [2022-01-31 10:21:52,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636474375] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:21:52,818 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:21:52,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-01-31 10:21:52,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723886008] [2022-01-31 10:21:52,818 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:21:52,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-31 10:21:52,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:21:52,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-31 10:21:52,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-31 10:21:52,819 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:21:52,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:21:52,911 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2022-01-31 10:21:52,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-31 10:21:52,911 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2022-01-31 10:21:52,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:21:52,913 INFO L225 Difference]: With dead ends: 39 [2022-01-31 10:21:52,913 INFO L226 Difference]: Without dead ends: 39 [2022-01-31 10:21:52,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-01-31 10:21:52,918 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 33 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:21:52,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 88 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:21:52,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-01-31 10:21:52,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2022-01-31 10:21:52,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 29 states have (on average 1.206896551724138) internal successors, (35), 29 states have internal predecessors, (35), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 10:21:52,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2022-01-31 10:21:52,923 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 30 [2022-01-31 10:21:52,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:21:52,924 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2022-01-31 10:21:52,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:21:52,924 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2022-01-31 10:21:52,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-31 10:21:52,927 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:21:52,927 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:21:52,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-31 10:21:53,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:21:53,149 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:21:53,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:21:53,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1959213215, now seen corresponding path program 2 times [2022-01-31 10:21:53,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:21:53,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086602204] [2022-01-31 10:21:53,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:21:53,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:21:53,160 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:21:53,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1998718394] [2022-01-31 10:21:53,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 10:21:53,161 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:21:53,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:21:53,162 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 10:21:53,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-31 10:21:53,213 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 10:21:53,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:21:53,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-31 10:21:53,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:21:53,308 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-31 10:21:53,308 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 10:21:53,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:21:53,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086602204] [2022-01-31 10:21:53,308 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:21:53,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998718394] [2022-01-31 10:21:53,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998718394] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 10:21:53,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 10:21:53,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-31 10:21:53,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239541540] [2022-01-31 10:21:53,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 10:21:53,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-31 10:21:53,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:21:53,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-31 10:21:53,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-31 10:21:53,310 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:21:53,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:21:53,345 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2022-01-31 10:21:53,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-31 10:21:53,346 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 35 [2022-01-31 10:21:53,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:21:53,347 INFO L225 Difference]: With dead ends: 50 [2022-01-31 10:21:53,347 INFO L226 Difference]: Without dead ends: 50 [2022-01-31 10:21:53,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-31 10:21:53,347 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 15 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 10:21:53,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 39 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 10:21:53,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-01-31 10:21:53,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 43. [2022-01-31 10:21:53,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 36 states have (on average 1.2222222222222223) internal successors, (44), 36 states have internal predecessors, (44), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 10:21:53,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2022-01-31 10:21:53,351 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 35 [2022-01-31 10:21:53,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:21:53,351 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2022-01-31 10:21:53,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:21:53,351 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2022-01-31 10:21:53,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-31 10:21:53,352 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:21:53,352 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:21:53,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-31 10:21:53,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:21:53,584 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:21:53,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:21:53,585 INFO L85 PathProgramCache]: Analyzing trace with hash 962140862, now seen corresponding path program 1 times [2022-01-31 10:21:53,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:21:53,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590746218] [2022-01-31 10:21:53,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:21:53,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:21:53,599 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:21:53,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1092223706] [2022-01-31 10:21:53,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:21:53,599 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:21:53,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:21:53,604 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 10:21:53,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-31 10:21:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 10:21:53,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-31 10:21:53,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:21:53,736 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-31 10:21:53,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:21:53,804 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-31 10:21:53,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 10:21:53,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590746218] [2022-01-31 10:21:53,804 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 10:21:53,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092223706] [2022-01-31 10:21:53,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092223706] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 10:21:53,805 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 10:21:53,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-01-31 10:21:53,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018114342] [2022-01-31 10:21:53,805 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 10:21:53,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-31 10:21:53,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 10:21:53,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-31 10:21:53,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-01-31 10:21:53,806 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:21:53,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 10:21:53,973 INFO L93 Difference]: Finished difference Result 84 states and 100 transitions. [2022-01-31 10:21:53,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-31 10:21:53,973 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 35 [2022-01-31 10:21:53,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 10:21:53,974 INFO L225 Difference]: With dead ends: 84 [2022-01-31 10:21:53,974 INFO L226 Difference]: Without dead ends: 84 [2022-01-31 10:21:53,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2022-01-31 10:21:53,975 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 62 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 10:21:53,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 88 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 10:21:53,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-01-31 10:21:53,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 54. [2022-01-31 10:21:53,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 47 states have internal predecessors, (57), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 10:21:53,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2022-01-31 10:21:53,979 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 35 [2022-01-31 10:21:53,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 10:21:53,979 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2022-01-31 10:21:53,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 10:21:53,979 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2022-01-31 10:21:53,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-31 10:21:53,980 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 10:21:53,980 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 10:21:53,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-31 10:21:54,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:21:54,190 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 10:21:54,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 10:21:54,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1606309128, now seen corresponding path program 2 times [2022-01-31 10:21:54,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 10:21:54,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160285730] [2022-01-31 10:21:54,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 10:21:54,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 10:21:54,206 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 10:21:54,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [475776689] [2022-01-31 10:21:54,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 10:21:54,207 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 10:21:54,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 10:21:54,224 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 10:21:54,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-31 10:21:54,359 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 10:21:54,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 10:21:54,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 64 conjunts are in the unsatisfiable core [2022-01-31 10:21:54,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 10:21:54,493 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 56 [2022-01-31 10:21:54,501 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-01-31 10:21:54,510 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-01-31 10:21:54,643 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 74 [2022-01-31 10:21:54,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:21:54,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:21:54,656 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:21:54,657 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 100 [2022-01-31 10:21:54,674 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-01-31 10:21:54,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:21:54,694 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 27 [2022-01-31 10:21:54,877 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 62 [2022-01-31 10:21:54,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:21:54,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:21:54,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:21:54,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:21:54,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:21:54,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:21:54,891 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 83 [2022-01-31 10:21:54,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:21:54,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:21:54,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:21:54,939 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 26 [2022-01-31 10:21:55,040 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 69 [2022-01-31 10:21:55,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:21:55,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:21:55,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:21:55,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:21:55,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:21:55,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:21:55,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:21:55,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:21:55,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:21:55,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:21:55,051 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 104 [2022-01-31 10:21:55,068 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-01-31 10:21:55,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:21:55,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:21:55,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:21:55,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:21:55,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:21:55,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:21:55,091 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 39 [2022-01-31 10:21:55,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:21:55,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:21:55,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:21:55,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:21:55,755 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:21:55,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:21:55,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:21:55,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:21:55,758 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 10:21:55,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:21:55,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:21:55,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 10:21:55,765 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 10:21:55,765 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 117 treesize of output 43 [2022-01-31 10:21:55,919 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 10:21:55,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 10:22:07,119 WARN L860 $PredicateComparison]: unable to prove that (or (let ((.cse7 (mod c_~ARR_SIZE~0 4294967296))) (let ((.cse6 (<= .cse7 2147483647)) (.cse1 (* 2 c_main_~sum~0)) (.cse5 (* 2 (* c_~ARR_SIZE~0 c_~ARR_SIZE~0))) (.cse2 (select |c_#memory_int| |c_main_~#array~0.base|)) (.cse4 (* .cse7 4)) (.cse3 (* c_main_~column~0 4)) (.cse0 (+ (* c_~ARR_SIZE~0 c_~ARR_SIZE~0 c_~ARR_SIZE~0) c_~ARR_SIZE~0))) (and (or (= .cse0 (+ .cse1 (* 2 (select .cse2 (+ |c_main_~#array~0.offset| .cse3 (* .cse4 c_main_~row~0) 4))) .cse5)) (not .cse6)) (or .cse6 (= (+ .cse1 .cse5 (* (select .cse2 (+ (* (+ (- 17179869184) .cse4) c_main_~row~0) |c_main_~#array~0.offset| .cse3 4)) 2)) .cse0))))) (< (+ c_main_~row~0 1) c_~ARR_SIZE~0)) is different from true [2022-01-31 10:22:11,809 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2022-01-31 10:22:11,890 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-31 10:22:11,891 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 59 [2022-01-31 10:22:11,928 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 4 [2022-01-31 10:22:12,368 INFO L353 Elim1Store]: treesize reduction 142, result has 23.2 percent of original size [2022-01-31 10:22:12,370 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 14962943 treesize of output 14209308 [2022-01-31 10:22:31,421 WARN L228 SmtUtils]: Spent 19.05s on a formula simplification that was a NOOP. DAG size: 1137 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-01-31 10:22:49,641 WARN L228 SmtUtils]: Spent 18.22s on a formula simplification that was a NOOP. DAG size: 1134 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-01-31 10:24:13,269 WARN L228 SmtUtils]: Spent 1.09m on a formula simplification. DAG size of input: 1123 DAG size of output: 1123 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-01-31 10:25:29,282 WARN L228 SmtUtils]: Spent 18.45s on a formula simplification that was a NOOP. DAG size: 1117 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-01-31 10:27:05,754 WARN L228 SmtUtils]: Spent 22.06s on a formula simplification. DAG size of input: 1112 DAG size of output: 1110 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-01-31 10:27:43,144 WARN L228 SmtUtils]: Spent 10.87s on a formula simplification that was a NOOP. DAG size: 1106 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-01-31 10:28:22,799 WARN L228 SmtUtils]: Spent 21.34s on a formula simplification. DAG size of input: 1104 DAG size of output: 1104 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-01-31 10:29:01,760 WARN L228 SmtUtils]: Spent 11.47s on a formula simplification that was a NOOP. DAG size: 885 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-01-31 10:29:46,321 WARN L228 SmtUtils]: Spent 27.37s on a formula simplification. DAG size of input: 885 DAG size of output: 885 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-01-31 10:30:27,070 WARN L228 SmtUtils]: Spent 9.65s on a formula simplification that was a NOOP. DAG size: 885 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-01-31 10:31:05,626 WARN L228 SmtUtils]: Spent 23.75s on a formula simplification. DAG size of input: 885 DAG size of output: 885 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-01-31 10:31:45,398 WARN L228 SmtUtils]: Spent 25.07s on a formula simplification. DAG size of input: 885 DAG size of output: 885 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-01-31 10:32:25,177 WARN L228 SmtUtils]: Spent 25.00s on a formula simplification. DAG size of input: 885 DAG size of output: 885 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-01-31 10:32:53,838 WARN L228 SmtUtils]: Spent 9.16s on a formula simplification that was a NOOP. DAG size: 885 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-01-31 10:33:31,278 WARN L228 SmtUtils]: Spent 23.51s on a formula simplification. DAG size of input: 885 DAG size of output: 885 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-01-31 10:34:08,768 WARN L228 SmtUtils]: Spent 23.65s on a formula simplification. DAG size of input: 885 DAG size of output: 885 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-01-31 10:35:00,458 WARN L228 SmtUtils]: Spent 37.80s on a formula simplification. DAG size of input: 885 DAG size of output: 885 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-01-31 10:35:37,854 WARN L228 SmtUtils]: Spent 23.25s on a formula simplification. DAG size of input: 885 DAG size of output: 885 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-01-31 10:36:14,600 WARN L228 SmtUtils]: Spent 23.11s on a formula simplification. DAG size of input: 885 DAG size of output: 885 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)